Power Ventures Group LLC is nearing an air permit from the Illinois Environmental Protection Agency that would allow it to construct a 112-MW power plant near the town of Garden Prairie in Boone County, Ill.
The Garden Prairie Energy Facility would have 12 natural gas-fired engines that combined would generate up to 112 MW (nominal). Each engine would have a rated output of 9.34 MWe (12,526 horsepower).
The Illinois EPA is taking comment until Oct. 25 on a draft version of the permit. The agency said it has reviewed Power Ventures’ application and made a preliminary determination that the application meets applicable requirements.
This facility would be developed as a source of reserve power for operators of wind turbine power plants, to enable them to meet contractual obligations during periods of low or variable winds, the agency noted. This facility would also be able to function as a peaking station, to generate electricity in peak demand periods, and at other times when other power plants are not available due to scheduled or unexpected outages.
Power Ventures originally applied for this construction permit subject to the federal rules for the Prevention of Significant Deterioration (PSD) due to the proposed source being a major source solely for greenhouse gases (GHG). The draft permit had undergone public comment but prior to issuance, the Supreme Court came down with a decision that required PSD applicability only for “anyway” sources. As a result, the project would no longer be subject to PSD. Power Ventures has since updated the application to increase emissions of non-GHG emissions but will still not be subject to PSD, the agency said.
As a peaking plant, the air permit would have these restrictions for its operation:
- The total usage of natural gas by the natural gas engines can’t exceed 59 million scf per month per engine and 7,725 million scf per year for all 12 engines combined.
- The operation of all 12 affected natural gas engines, combined, shall not exceed 92,700 engine-hours per year.
- The total number of startups by the affected natural gas engines can’t exceed 10,908 per year for all engines combined.
A project contact is: Power Ventures Group LLC c/o Garden Prairie Energy Facility, Attn: Thomas Graves, 9400 Ward Parkway, Kansas City, Missouri 64114.